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PEEC-MoM hybrid method for electromagnetic compatibility analysis of the cable-enclosure system

YANG Furong1,2;LI Peng1;XU Wanye1;WEI Maogang2;LI Xun1   

  1. (1. Ministry of Education Key Lab. of Electronic Equipment Structure, Xidian Univ., Xi'an 710071, China;
    2. Southwest China Research Institute of Electronic Equipment, Chengdu 610036, China)
  • Received:2015-11-10 Online:2016-12-20 Published:2017-01-19

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Abstract:

For the EMC problem of a cable(with connector)-enclosure(with PCB) system, a hybrid numerical analysis method for the partial element equivalent circuit (PEEC) and the method of moment (MoM) is proposed. The PEEC is used to model the cable-connector-PCB, and the electromagnetic properties could be calculated by the circuit method. Based on energy conservation, the cable-connector is replaced by an equivalent dipole which has similar electromagnetic radiation properties. The equivalent dipole is added to the model of the enclosure which is analyzed by the MoM. Then the shielding effectiveness of the enclosure and the signal integrity of the PCB in the enclosure can be obtained. An experiment is designed to verify the proposed hybrid method. The test results and simulated results are in good agreement. This hybrid method could be used to calculate not only the signal integrity of the cable and PCB, but also the shielding effectiveness of the cable-enclosure system.


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